Improvement in milk-cooters



l To all whom it may' concern: v e Y N @anni .(itiliiiw.

`MliRRlT'lXY F. POTTER, OF KANEVILLE, ILLINOIS.

i Letters Patent No. 91,481, dated June 15, 1869.

IMPROVEMENT IN MILK-COOLERS.

The Schedule referredto inthe Letters Patent and making part of the same.

Be it known that I, Mnnnnrrr F. POTTER, 4of Kaneville, in the county of Kane, and State of Illinois, `have invented a new and useful Improvement-in Milk-Goolers; and I do herebydeclare the following to be a full and exact description of the construction and operation of the same, reference being had to theannexed drawings, making a part of this specification, of which- Figure lis a' perspective view, and

Figure 2, a vertical section,

My invention consists in the method by which I conduct cold water upward into a can or other 'vessel containing milk, or other liquid to be cooled, and return it `from `within the caudown again, from the platform fou which the can is standing, automatically, withoutthe labor of carrying yit by` hand; and also in a vessel `which spreads the cooling-liquid into a thin sheet, thereby greatly economizing the amount of water used.

To enable others ,tor makeand use my invention, I will proceed to describe its construction and operation.

A represents au annular cylindrical vessel, open at the top and bottom. `It may he made of sheet-metal, tin being a good metal ofv which to make it.

The inner or concave surfaceof this cylinder is surrounded by spiralwire c, of about one-,eighth inch diameter. This spiral V-wire is soldered tothe inner wall. Outside this wire, and closely adherent toit, the outer or convex wall of the cylinder is fastened and soldered tight. This spiral wire forms a circuitous channelor passage for the water: This passage has"a thickness only equal to the diameter of the spiral wire, and, is intended to be about one-eighth of an inch in thickness. The inner and outer coating of thiscylinder are soldered together, asmall burr being formed upon the inner casing at vthe topand bottom. This spiral wire adds greatly to the strength ofthe cylinder, and keeps the passage, for the liquid running through it, of a uniform calibre.

Fig. 1 shows aperspective view of the cooling-cylinder A, which is to spread the water into a thin spiral sheet, and which IV shall henceforth call a spreadingcylinder or spreading-chamber.

Fig. l shows a perspective view of the spreadingchaniberA standing iu a milk-can, J, ready for use.

Fig. 2 represents a vertical section of the spreading-chamber A, standing by itself.

To the inside of the spreading-chamber A, the vertical tube B is soldered.

At the upper end of the tube B is an elbow, with a short horizontal projection of the tube extending out four or five inches beyond theouter wall of the spreading-chamber. f

At the bottom of the tube B, an opening, D, is seen through the inner wall of the spreading-chamber.

This opening connects the cavity lof the tube B with that ofthe spiral channel W. l

F is a tube, attached by its upper end to the tube B by an air-tight joint.

The other end of this tube is set in a tub, H, stand- -ing about twofeet above the surface of the ground.

Another tube, G, some longer than F, is also fitted, by an air-tight joint, to the short tube S.

Thev other end is set in a low .trough near the ground, and lower than the level ofthe tub H.

The great diilculty in cooling milk before carrying it to a cheese-factory, is owing to the labor of carrying the water up above the level of the can, to form a reservoir, from which the water could bebrought in contact with the milk, for the cans have to be placed upon au elevated platform before they are filled, to facilitate their loading into the wagon.

By my method, a great part of this labor is avoided, and the milk is all cooled in the most rapid manner, with the least possible consumption of water, as I will now proceed to show.

Supposethe can J is standing on the platform illed with warm milk, in which the spreading-chamber A is seen staliding.

I rst lill the tub H with cold water. I immerse the lower end of the pipe F.

It will be more convenient if this pipe should be provided with a valve, though this is not essential. It would be lnore convenient also if these tubes were made exible, though metal ones could be used.

Having immersed the lower end of pipe F,'I proceed to exhaust the air from the lower end of tube G.

This can be readily done by a small suction-pump, easily attached to the pipe G.

As fast as the air becomes exhausted, the water will flow from tub I-I along the pipe F, up into the tube B, downward along B into the `bottom of the spreading-chamber A, upward along the spiral channel W to the pipe S, into the pipe G, down which it ows, and is discharged at the trough L warm.

The rapidity of the ilow can be controlled by the stop-cock where it is discharged.

1t will be observed iu my cooler, that all the coolingsurfaces are vertical, and that the spreadingchamber exposes a much greater cooling-surface to the milk than the entire inner surface lof the can,

and, at the same time, leaves it all exposed to the In this water amel Figure 3 shows a cross-section, but the circular is fm' better; or it may be made Hat, as shown in Figure 4.

l. 1 claim the air-tight spreading-chamber and feeding and discharging-pipes F G, the whole operating as a. siphou, for conducting the cooling-liquid through and discharging it 'om the can, or other vessel containing the liquid to be cooled, automatically.

2. I claim the spreadingchamber, in combination with the tube B and milk-can or vessel as set forth.

Witnesses: MERRITT F. POTTER.

FRANCIS STIFFLE, HENRY PALMER. 

